Abstract: Laser-arc hybrid welding, as an innovative fusion welding technology, has attracted tremendous attention recently and has already been investigated for applications in many fields. However, laser-arc hybrid welding, as the combination of laser welding and arc welding process, involves a large number of parameters. These parameters and identified settings have important influence on the welding stability and weld quality. The effects of process parameters such as laser types assistant power supply, welding direction, focal point position, laser-arc distance, ratio of laser to arc power, shielding gas on the weld shape were reviewed. The future work should be made in this area was presented at last.